# lt = []
# print(bool(lt))
# if not lt:
#     print('空')

str = ' 	O'
word_tag_list = str.split('\t')
print(word_tag_list)
word = word_tag_list[0]
if not word:  # 如果word为None或''，则跳过
    print('空')
tag = word_tag_list[1]
print(word,tag)

str = ' '
print(bool(str))